A) \[b\,\left( \frac{{{a}^{2}}-{{b}^{2}}}{{{a}^{2}}+{{b}^{2}}} \right)\]
B) \[b\,\left( \frac{{{a}^{2}}+{{b}^{2}}}{{{a}^{2}}-{{b}^{2}}} \right)\]
C) \[a\,\left( \frac{{{a}^{2}}-{{b}^{2}}}{{{a}^{2}}+{{b}^{2}}} \right)\]
D) \[a\,\left( \frac{{{a}^{2}}+{{b}^{2}}}{{{a}^{2}}-{{b}^{2}}} \right)\]
Correct Answer: B
Solution :
\[\tan \alpha =\frac{b}{a}\], \[\tan 2\alpha =\frac{2(b/a)}{1-{{(b/a)}^{2}}}=\frac{p+b}{a}\]You need to login to perform this action.
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